MBA Exam

For what values of C does the following system of equations have no solution?(i) 2x + y + 3z = 4(ii) 3x + y - z = 5(iii) x + y + 7z = CNo OA available..please post a detailed solution.. Thanks !!!

1) 3
2) 9
3) 4
4) any value other than 3

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MBA Other Question

Ten years hence Rajesh’s age would be 15 years more than twice his friend Sanjay’s age. 10 years ago Rajesh’s age was 35 years more than twice his friend’s age. After how many years would Rajesh’s age be exactly twice of his friend’s age?

1) 10
2) 15
3) 25
4) None of these
A staircase has 10 steps. You walk up taking 1 or 2 steps at a time. In how many ways can you go up if 5th step is boken??post ur approach

1) 30
2) 25
3) 20
4) 35